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Add support to serialize btOptimizedBvh/btQuantizedBvh for a btBvhTriangleMeshShape (using the new btSerializer). This is a new implementation, with full cross-platform support.

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So it is different from the in-place method (btQuantizedBvh::serializeInPlace/deserializeInPlace).

It is also possible to serialize/deserialize just the bvh, using the btSerializer (needs some code snippet/helper)
See also http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=4770
This commit is contained in:
erwin.coumans
2010-02-23 09:03:46 +00:00
parent e4c3c2a1a2
commit 41e9115bca
15 changed files with 929 additions and 451 deletions
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52
src/BulletCollision/CollisionShapes/btBvhTriangleMeshShape.cpp
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@@ -17,6 +17,7 @@ subject to the following restrictions:
#include "BulletCollision/CollisionShapes/btBvhTriangleMeshShape.h"
#include "BulletCollision/CollisionShapes/btOptimizedBvh.h"
#include "LinearMath/btSerializer.h"
///Bvh Concave triangle mesh is a static-triangle mesh shape with Bounding Volume Hierarchy optimization.
///Uses an interface to access the triangles to allow for sharing graphics/physics triangles.
@@ -364,3 +365,54 @@ void btBvhTriangleMeshShape::setOptimizedBvh(btOptimizedBvh* bvh, const btVect
}
///fills the dataBuffer and returns the struct name (and 0 on failure)
const char* btBvhTriangleMeshShape::serialize(void* dataBuffer, btSerializer* serializer) const
{
btTriangleMeshShapeData* trimeshData = (btTriangleMeshShapeData*) dataBuffer;
btCollisionShape::serialize(&trimeshData->m_collisionShapeData,serializer);
m_meshInterface->serialize(&trimeshData->m_meshInterface, serializer);
trimeshData->m_collisionMargin = float(m_collisionMargin);
if (m_bvh)
{
void* chunk = serializer->findPointer(m_bvh);
if (chunk)
{
#ifdef BT_USE_DOUBLE_PRECISION
trimeshData->m_quantizedDoubleBvh = (btQuantizedBvhData*)chunk;
trimeshData->m_quantizedFloatBvh = 0;
#else
trimeshData->m_quantizedFloatBvh = (btQuantizedBvhData*)chunk;
trimeshData->m_quantizedDoubleBvh= 0;
#endif //BT_USE_DOUBLE_PRECISION
} else
{
#ifdef BT_USE_DOUBLE_PRECISION
trimeshData->m_quantizedDoubleBvh = (btQuantizedBvhData*)m_bvh;
trimeshData->m_quantizedFloatBvh = 0;
#else
trimeshData->m_quantizedFloatBvh = (btQuantizedBvhData*)m_bvh;
trimeshData->m_quantizedDoubleBvh= 0;
#endif //BT_USE_DOUBLE_PRECISION
int sz = m_bvh->calculateSerializeBufferSizeNew();
btChunk* chunk = serializer->allocate(sz,1);
const char* structType = m_bvh->serialize(chunk->m_oldPtr, serializer);
serializer->finalizeChunk(chunk,structType,BT_QUANTIZED_BVH_CODE,m_bvh);
}
} else
{
trimeshData->m_quantizedFloatBvh = 0;
trimeshData->m_quantizedDoubleBvh = 0;
}
return "btTriangleMeshShapeData";
}